Broad Vein Mudstone Formation (Q85749150)

  • matcher place: Gwynedd (relation 77961), VC48 Merionethshire (relation 298875)
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  • Wikipedia: English
  • English Wikipedia categories: Ordovician System of Europe, Rock formations of Wales, Slate industry in Wales, Upper Ordovician Series
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Summary from English Wikipedia (enwiki)

The Broad Vein Mudstone Formation (commonly known as the Broad Vein, historically known as the Red Vein and in Welsh as Y Faen Goch) is an Ordovician lithostratigraphic group (a sequence of rock strata) in Mid Wales. The rock of the formation is silty mudstone, intensely bioturbated in places. It varies in colour from a pale to a medium blue. This formation has been commercially quarried as slate in several locations along its length. The formation is between 400 metres (1,300 ft) and 560 metres (1,840 ft) thick and runs from Dinas Mawddwy south-west to Cardigan Bay at Tywyn.

Wikidata location: 52.6632, -3.8453 view on OSM or edit on OSM

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Rock formations of Wales natural, landmark